package concurrency;

class UnresponsiveUI {
	private volatile double d =1;
	public UnresponsiveUI() throws Exception {
		while(d > 0)
			d = d + (Math.PI + Math.E) / d;
		System.in.read();
	}
}

public class ResponsiveUI extends Thread {
	private static volatile double d =1;
	public ResponsiveUI() {
		setDaemon(true);
		start();
	}
	public void run() {
		while(true) {
			d = d + (Math.PI + Math.E) / d;
		}
			
	}
	public static void main(String[] args) throws Exception {
		//new UnresponsiveUI();
		new ResponsiveUI();
		System.in.read();
		System.out.println(d);

	}

}
